A low-symmetrical zinc phthalocyanine-based Langmuir-Blodgett thin films forNO2 gas sensor applications

5th International Conference of Photonics and Information Optics

Krichevsky, D.M.^1,2 ; Zasedatelev, A.V.^1,2 ; Tolbin, A Yu^3 ; Zelenskiy, Yu.M.^1 ; Krasovskii, V.I.^1,2 ; Karpo, A.B.^2 ; Tomilova, L.G.^3,4

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, 31 Kashirskoe shosse, Moscow

115409, Russia^1

Prokhorov General Physics Institute, Russian Academy of Sciences, Vavilov Str. 38, Moscow

119991, Russia^2

Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka, Moscow region

142432, Russia^3

Department of Chemistry M.V. Lomonosov Moscow State University, Moscow

119991, Russia^4

关键词: Atmospheric conditions;    Charge transfer process;    Environmental safety;    Hazardous substances;    Langmuir-blodgett monolayers;    Molecular aggregation;    Sensor applications;    Zinc phthalocyanines;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/737/1/012030/pdf
DOI  :  10.1088/1742-6596/737/1/012030

来源: IOP

【 摘 要 】

For many years effective detection of hazardous substances such as nitrogen oxides has remained a crucial task for environmental safety. In this article, we demonstrate high promising NO2-sensitive Langmuir-Blodgett monolayer structures based on 2-((2'- hydroxymethyl)-benzyloxy)-9(10),16(17),23(24)-tri-/re/-butyl- substituted low symmetrical zinc phthalocyanine complex bearing hydroxyl group on the periphery (compound 1). Amphiphilic arrangement of macrocycles was demonstrated to eliminate disordered molecular aggregation, resulting in a marked NO2gas sensing effect under real atmospheric conditions. The optical response of monolayers was at room temperature, with the significant spectral changes being caused by the specific charge transfer process in phthalocyanine n-conjugated electronic system.